The collection contains play manuscripts, programs, playbills, posters, photographs, correspondence, agreements, scrapbooks, clippings, printed ephemera, and memorabilia relating to Yiddish theater primarily in the early twentieth century, especially the interwar period. Also included are items of printed ephemera related to Yiddish film, Hebrew theater, and a broad range of Jewish performers, including cantors, singers and dancers. Geographically, the materials originate predominantly in Poland and other parts of Eastern Europe, including parts of the Russian Empire and, later, the Soviet Union; and, to a lesser extent, the United States, especially New York City. Also included are materials from Western Europe, Palestine (Eretz Israel), South America, and other regions around the world. Among the theater personalities represented in the collection with significant amounts of material are Herz Grossbard, David Herman, Joseph Winogradoff, Rudolf Zaslavsky, Zygmunt Turkow, Jonas Turkow, Moyshe Lipman, Ida Kaminska, and Esther Rachel Kaminska. The theater groups best represented include the Varshever Yidisher Kunst-Teater (VYKT; Warsaw Yiddish Art Theater), founded by Zygmunt Turkow and Ida Kaminska; the Vilna Troupe; Yung Teater / Nay Teater (Warsaw; Vilna), under the direction of Michael Weichert; the Moscow State Yiddish Theater (known by its Russian acronym "GOSET"); Maurice Schwartz's Yiddish Art Theatre, of New York; and the Hebrew theater "Habimah." A wide variety of other professional as well as amateur theater groups are represented with smaller amounts of material.

This collection contains the minutes, correspondence and financial records of the I.L. Peretz Yiddish Writers’ Union from its founding in 1915 until 1973. Among the correspondence is a fair amount concerning the Fund for Jewish Refugee Writers, unions and union grievances, requests for aid from Jewish writers and activists in New York and abroad, and labor disputes and strikes.

This collection consists of photographs and negatives of World ORT conferences and congresses, various individuals connected with ORT, and ORT vocational programs and activities, including in Displaced Person’s camps, in Europe, Asia, the Middle East, Africa, Cuba, and North and South America.

This collection contains manuscripts of novels, short stories, poems, essays, lectures, speeches, translations, and other writings, correspondence, photographs, and personal documents and materials of Yiddish writer Chaim Grade and his wife Inna Hecker Grade. The collection helps to illustrate Grade’s literary development and impact on Yiddish literature over time, from his earliest poetic works written in Vilna and the Soviet Union, to his prolific and accomplished prose work composed mainly in the United States. The collection illuminates Inna Grade's intellectual and academic prowess, as well as the integral role that she played in the editorial and logistical aspects of Grade's literary output.

This collection contains correspondence between Chaim Zhitlowsky and many important political figures and organizations, as well as manuscripts and other writings, some written by Zhitlowsky and some written by others. There are also notes and other materials from speeches and lectures that Zhitlowsky gave, financial documents, articles written about Zhitlowsky, newspaper clippings of articles by Zhitlowsky, materials from celebrations held in Zhitlowsky’s honor, photographs, excerpts from his works, and various other assorted items. These materials serve to illustrate both Zhitlowsky’s importance in the Yiddish and Russian literary field and his deep involvement in the American and Russian-Jewish Socialist, Territorialist and Diaspora Nationalism movements.

This collection contains documents relating to David Pinski’s role as a Yiddish writer, playwright, essayist, translator, editor, literary critic, and author of novels, plays, short stories, essays, and poems. There is personal and professional correspondence, manuscripts of novels, plays, poems, essays, and articles, translations of Pinski’s works into English and Russian, lectures made on various occasions, personal documents and photographs, programs, notes, and newspaper clippings. These materials demonstrate Pinski’s important role in Yiddish drama and literature, Jewish community life and Yiddish cultural institutions.

This collection contains the personal and professional papers of Joseph Buloff and Luba Kadison, leading actors of the Vilna Troupe and of the Yiddish and English stage, both in the United States and internationally. Most of the information concerns their theatrical careers, including play manuscripts, drawings and photographs of plays and actors, reviews, flyers, and musical scores. There is also some personal biographical information about Buloff, including his memoirs and audio cassettes of interviews. These materials show the importance and influence of Buloff and Kadison for Yiddish and English theater for over sixty years.

This collection contains correspondence between Mendel Osherowitch and many important literary and political figures, as well as Yiddish manuscripts by Osherowitch, clippings, photos, and obituaries and letters written to his family after his death. These materials illustrate Osherowitch’s importance in the Yiddish literary field as well as his role in various Jewish organizations.

This collection contains documents of journalist and left-wing political activist Paul Novick, consisting mainly of correspondence, subject files, manuscripts, photographs, and newspaper clippings. These materials relate to Novick’s career as long-time editor of the Morning Freiheit (Morning Freedom), his important role in the worldwide Communist movement, the history of the Freiheit itself, and Jewish and general politics. These materials demonstrate Novick’s important, and changing, role in the history of Communism, as well as his career as a Yiddish journalist and author.

This collection contains manuscripts of plays, articles and other writings, correspondence, memoirs, photographs, theater programs, and personal materials of Yiddish playwright, novelist, journalist, travel writer, and theater director Peretz Hirschbein. The collection helps to illustrate Hirschbein’s importance and lasting impact upon the revival of Yiddish theater and literature in the early twentieth century.

This collection contains the personal and professional papers of historian and bibliographer Philip Friedman. These materials include correspondence with individuals and with organizations, newspaper clippings, subject files, manuscripts of works by Friedman and by others, and some of Friedman’s personal documents. These materials relate to Friedman’s work on the histories of various Jewish communities, particularly those in Poland, and his work gathering source documents about the Holocaust.

This collection contains the personal and professional papers of Shmuel Niger, including correspondence with many important literary figures, as well as manuscripts by Niger, writings about Niger written by others, Niger’s speeches and lectures, selections from his published writings, and biographical materials. These materials serve to illustrate Niger’s great importance to Yiddish literary criticism and Jewish historical writing as well as his role as a writer on contemporary themes, a teacher and lecturer, editor and communal leader.

This collection contains the personal and professional papers of William Edlin, editor of The Day and a prominent Socialist. It includes correspondence with individuals and with organizations, newspaper clippings, manuscripts of works by Edlin and by others as well as translations done by Edlin, and some of Edlin’s personal documents. These materials relate to Edlin’s involvement with The Day, with the Socialist Party, the Workmen’s Circle, various labor and Zionist organizations, literary clubs and activities, and with music, art and drama.